Answer:
You didn't add the variable but I will show uou all the ways.
0.25a+0.5 = 4.5 value of a is 16
0.25+0.5 = 4.5a value of a is 6
Step-by-step explanation:
First way:
0.25a+0.5 = 4.5 Subtract 0.5 on both sides
0.25a = 4 Divide 0.25 on both sides
a = 16
Second way:
0.25+0.5 = 4.5a Combine like terms
0.75 = 4.5a Divide 4.5 on both sides
6 = a
